Robot-Assisted Arm Trainer in Subacute Stroke Patients; Pilot-Study
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Abstract
Objective: To study whether a robot-assisted arm trainer (AT = Bi-Manu track), utilizing repetitive cycles of passive and active bilateral forearm and wrist movements, will improve motor and functional scores of the upper limb in moderate to severely affected subacute stroke patients.
Designs: Randomized-controlled trial study
Settings: Prasat Neurological Institute
Subjects: Twenty subacute [< 3 month after stroke] hemiplegic stroke patients with severe upper limb paresis; Fugl-Meyer Motor Score of upper extremities [FM UE 27]
Methods: Twenty patients were randomly assigned to either the occupational therapy program [OT] or OT with AT. All patients practiced for 30 min/day, 3-5 days per week, for at least 4 weeks. In addition, AT patients exercised 30 minutes per day with the robot. The primary measurement of progress was the motor score [FM UE 0-66], and the secondary measurements were functional scores [the Manual Function Test, MFT 0-32] and muscle tone [Modifies Ashworth Score, MAS 0-4]
Results: After intervention, FM UE and MFT scores improved over 4 weeks in both OT and OT+AT group, but muscle tone remained unchanged. However, no statistically significant difference was observed on the FM UE, MAS and MFT between both groups.
Discussion and Conclusion: The results from this study indicate that AT provides on additional benefits to conventional occupational therapy. However, alternate studies measuring different variables should be conducted to further assess the impact of AT.
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References
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